Rockwell Automation 1797-XXX FLEX Ex System Certification Reference Manual - Manual (Page 243)

1 Publication 1797-6.5.6 - June 2005
Chapter
55
1797-BIC Bus Isolator Module and
1797-CEC Flexbus Connector
General Installation The 1797-CEC and -BIC must not be exposed to the environment. These
modules have a protection factor of IP20. These modules shall be installed in
an enclosure meeting the requirements of ANSI/ISA S82.02.01 or other
applicable ordinary location standards.
Make certain that you only connect the FLEX Ex backplane connector to
other intrinsically safe system modules to maintain the integrity of the
intrinsically-safe backplane.
QUALITY
B - A
Allen-Bradley
1797 - CEC
FLEXBUS
CONNECTOR
1 2 4 3
+V -V +V -V
1797 - BIC
PWR
QUALIT Y
B - A
Allen-Bradley
FLEXBUS
ISOLATOR
42864
1797-CEC 1797-BIC
ATTENTION
The 1797-BIC cannot be used as an associated apparatus
after its FLEX Ex backplane connector has been exposed
to non-intrinsically safe signals.
ATTENTION
For proper operation, cycle power to the 1797-BIC at the
same time power is cycled to the associated adapter.